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Viewing Impala Data in RAD Studio Data Explorer

How to view Impala data in RAD Studio Data Explorer using the CData FireDAC Components for Impala.

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData FireDAC Components for Impala, you gain access to live Impala data within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to both retrieve and update Impala data. This article will walk through connecting to Impala using the Data Explorer.

Connecting to Impala Data Using Data Explorer

You can create a simple application for displaying Impala data by utilizing the CData FireDAC Components for Impala and a new VCL Forms Application:

  1. Open the Data Explorer in RAD Studio and expand FireDAC.
  2. Right-click on CData Impala Data Source and click Add New Connection.

  3. Name the connection.
  4. Fill in the necessary connection parameters and click OK.

    In order to connect to Apache Impala, set the Server, Port, and ProtocolVersion. You may optionally specify a default Database. To connect using alternative methods, such as NOSASL, LDAP, or Kerberos, refer to the online Help documentation.

  5. Back in the Data Explorer, expand the tables for the connection.
  6. Create a new VCL Forms application and drag a table (for example: Customers) onto the form.

  7. Select the CustomersTable object on the form and set the Active property to true.
  8. Right-click on the object, bind visually, and link everything (*) to a new control (TStringGrid).

  9. Arrange the TStringGrid on the form and run the application to see the Customers data.

 
 
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